Page 5 - Apollo Moonships
P. 5
To The moon: The Apollo missions 3
RADIATOR PANELS
Those panels rejected heat to space as part of the Environmental Control System (ECS), designed to provide the flight crew with a life-supporting and comfortable internal environment.
SERVICE MODULE
This module carried the main propulsion system and most of the consumables of the spaceship, such as propellant, hydrogen, helium, oxygen, and alkaline fuel cells that produced water, heat, and electricity.
THE SATURN ROCKET To propel the Apollo spaceship beyond Earth
orbit, NASA built the largest and most powerful rocket put into operation until today. This heavy lift vehicle, named Saturn V, was 363 feet tall (110.6 meters) and consisted of three stages that produced together 8.9 million pounds of thrust, power enough to put a 45-ton payload to the moon. Each stage had one or more engine rockets that separated from the others when they consumed fuel. The first manned mission sent into space by a Saturn V rocket was Apollo 8 on December 21, 1968. The astronauts on board the Apollo spacecraft orbited the moon ten times but did not land.
COMMAND MODULE
This pressurized conical vessel housed the crew, control systems, and reentry equipment. Only this section of the Apollo spaceship returned to Earth.
ASCENT STAGE
The Lunar Excursion Module (LEM) ascent stage could carry two astronauts to the surface of the moon. This section had its own rocket engine, which was ignited by astronauts to leave the moon and to rejoin CSM at the lunar orbit.
DESCENT STAGE
This section of the Lunar Excursion Module contained the descent engine and acted as a launch platform when the ascent stage took off into the lunar orbit.
Ladder
Landing gear (folded in flight position)
Descent engine (nozzle extension)
Landing pad
Launch escape rocket
Command Module
Service Module
Lunar Module
Instrument unit
Third stage
Third stage engine Interstage ring
Second stage
Second stage engines
Interstage ring
First stage
First stage engines